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P911X50
Spa-Francorchamps


Joined: 03 Jan 2017
Posts: 252
Location: Hertfordshire


PostPosted: Fri May 10, 2019 10:55 am    Post subject: 996 turbo brakes vs 996 GT3 six pot brakes Reply with quote

Hi

Has anyone fitted GT3 6 pot brakes to their 996 turbo? If so, can you tell me if it made a noticeble difference to the braking performance.

Thanks
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MisterCorn
Dijon


Joined: 08 Jan 2011
Posts: 7201
Location: Nottingham, England

2004 Porsche 996 Turbo

PostPosted: Fri May 10, 2019 11:06 am    Post subject: Reply with quote

Performance in what way? I went from 330mm disks and turbo calipers to 350mm disks and GT3 calipers. I also run some big front brake ducts. GT3 RS I think but not 100% sure.

The performance between them under the majority of circumstances was more down to what pads were fitted than anything else. The turbo ones with decent pads would do 13 back-to-back emergency stops from 70mph with no fade at all. The GT3 ones did see fade under the same test, but not sure on the pads used. I fitted decent pads after that and then no fade again for the next test.

It is more about a larger thermal mass than anything else. You will have slightly more forward brake bias with these as well.

I fitted them because I like the look of them, with good brake ducts, decent fluid and good pads there is not likely to be a real need for them unless you are doing some pretty hardcore driving.

If you are doing changes, I have a couple of 27mm master cylinders available to give you a slightly stiffer pedal.

MC
 
  
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The return of Marty Wild
Kyalami


Joined: 04 Nov 2016
Posts: 1799



PostPosted: Fri May 10, 2019 11:33 am    Post subject: Reply with quote

I thought it was 14 hard stops? Laughing
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MisterCorn
Dijon


Joined: 08 Jan 2011
Posts: 7201
Location: Nottingham, England

2004 Porsche 996 Turbo

PostPosted: Fri May 10, 2019 11:50 am    Post subject: Reply with quote

I'm going to stick with 13.



MC
 
  
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sim996
Monza


Joined: 05 Aug 2017
Posts: 185



PostPosted: Fri May 10, 2019 4:47 pm    Post subject: Reply with quote

Standard turbo brakes are utter pap. Might as well put two blocks of wood either side of the disc. My mum's fiesta stopped better. It was embarrassing, I let my brother in law drive my Porsche and the first thing he mentioned was the terrible brakes. I used to brake twice as early before junctions as I had no confidence in them.

There is thread after thread of wooden brakes comments with replies saying they'll stop if you stand on them. I've been weight training all of my adult life so it's not like I was short on a bit of leg strength.

I fitted GT3 6 pots with standard 997 discs and performance friction pads. I'll change the pads as they squeel, but the braking performance was like switching the light on in a cellar.

Do it, you won't regret it. I'll get some decent discs and it'll be even better.

There's no difference to Pedal travel as the total piston area is the same, but it uses a larger swept area on a bigger radius with better heat management.

Best mod I've ever done. It's the brakes the car should have had.
 
  
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911UK
Porsche Community
Porsche Community


Joined: 15 May 2002
Posts: 10182
Location: 911UK

1997 Porsche 993 Carrera 2

PostPosted: Fri May 10, 2019 5:34 pm    Post subject: Re: 996 turbo brakes vs 996 GT3 six pot brakes Reply with quote

P911X50 wrote:
Hi

Has anyone fitted GT3 6 pot brakes to their 996 turbo? If so, can you tell me if it made a noticeble difference to the braking performance.

Thanks


they will make a noticeable difference to the 996 Turbo and a recommended upgrade
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HSC911
Long Beach


Joined: 23 Jul 2014
Posts: 6555
Location: Bedford


PostPosted: Fri May 10, 2019 6:24 pm    Post subject: Reply with quote

I had them on my car when I bought it...I think they were a bit pooh too but you get used to them.

I kind of like them now, more because they look so damn cool under the hollow spokes Cool

Grin
 
  
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GMG
Nürburgring


Joined: 07 Jan 2018
Posts: 394
Location: Devon


PostPosted: Fri May 10, 2019 6:26 pm    Post subject: Reply with quote

...I think the brakes (new all around 1000miles ago) complete with new brake fluid are crap tbh...my Honda jazz brakes have more feel and bite?!

I am thinking about changing the pads in an attempt to discover the fabled 911 braking performance...
 
  
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GMG
Nürburgring


Joined: 07 Jan 2018
Posts: 394
Location: Devon


PostPosted: Fri May 10, 2019 6:27 pm    Post subject: Reply with quote

...on my 2003 996 C2...
 
  
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MisterCorn
Dijon


Joined: 08 Jan 2011
Posts: 7201
Location: Nottingham, England

2004 Porsche 996 Turbo

PostPosted: Fri May 10, 2019 6:32 pm    Post subject: Reply with quote

I recently replaced the rear disks and pads on my C2, the inner faces were corroded but plenty of meat on them. I was really suprised at the difference.

MC
 
  
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diverzeusy
Suzuka


Joined: 10 Nov 2012
Posts: 1031
Location: Doncaster UK


PostPosted: Fri May 10, 2019 9:34 pm    Post subject: Reply with quote

I have installed 997.1 turbo calipers and discs to all 4 corners, I had no faith in the original 996 turbo brakes, in fact quite terrifying at times!
these are so much better, I have not changed the brake fluid reservoir/master cylinder as some seam to think you must, it may be even better if you do Dont know
I also flushed the system, fitted new stainless brake hoses and refilled with ATE performance fluid Thumb
these work great now Smile
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uk996
Silverstone


Joined: 09 Jan 2018
Posts: 132
Location: Home Counties


PostPosted: Fri May 10, 2019 9:56 pm    Post subject: Reply with quote

I hated the brakes on my car. I've since fitted 350mm Sebro disks all-round (997 turbo) with regular Pagid road pads with the standard calipers with 10mm spacers and high tensile bolts.

Night and day difference and not expensive. I already have the extra brake duct deflectors front and rear. If I want even better braking, I'd go for Pagid RS29.
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DJones
Hockenheim


Joined: 01 May 2011
Posts: 658
Location: Hampshire


PostPosted: Fri May 10, 2019 11:27 pm    Post subject: Reply with quote

I fitted the GT3 6 pots to mine with 350mm 997 turbo discs and RS29 pads, cracking mod. Stops better than my Ferrari 488 on 400mm carbon ceramic brakes. You won’t regret it but choose the right pad and disc combo.

Darren.
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Slippydiff
Nürburgring


Joined: 22 Nov 2007
Posts: 389



PostPosted: Sat May 11, 2019 6:22 am    Post subject: Reply with quote

uk996 wrote:
I hated the brakes on my car. I've since fitted 350mm Sebro disks all-round (997 turbo) with regular Pagid road pads with the standard calipers with 10mm spacers and high tensile bolts.

Night and day difference and not expensive. I already have the extra brake duct deflectors front and rear. If I want even better braking, I'd go for Pagid RS29.


Can I ask which Pagid pads you used ? Where you bought them from ? And what they cost ?
Many thanks.
 
  
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uk996
Silverstone


Joined: 09 Jan 2018
Posts: 132
Location: Home Counties


PostPosted: Sat May 11, 2019 9:42 am    Post subject: Reply with quote

Slippydiff wrote:

Can I ask which Pagid pads you used ? Where you bought them from ? And what they cost ?
Many thanks.


Yes, Pagid standard road pads. Sebro discs front and back.
All from Eurocarparts (or carparts4less).




Both companies have discount codes going at the moment, so take 14% off the CP4L prices.

If I decide to track the car, I'll put Pagid RS29 on. Perhaps Brembo HP2000 or Performance Friction for a more road biased setup, as the RS29 can squeal if they're used too lightly I've been told.
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uk996
Silverstone


Joined: 09 Jan 2018
Posts: 132
Location: Home Counties


PostPosted: Sat May 11, 2019 9:49 am    Post subject: Reply with quote

I'd would've gone for the 6 pot Brembo calipers, but the prices have been hiked up several times in the last 10 years, from about £700 a pair to £1700 now. Secondhand prices are about 70-75% of the new prices and have gone up to track the prevailing price.

Interestingly Porsche/Brembo brakes were universally praised when the cars were new. I reckon it's the combination of poor pads or discs combined with people's expectations has resulted in them being slated.

The change to 350mm discs and new pads (using the existing 4 pot calipers) have been a significant improvement, well worth doing.
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sim996
Monza


Joined: 05 Aug 2017
Posts: 185



PostPosted: Sat May 11, 2019 10:12 am    Post subject: Reply with quote

There's a yellow pair on eBay, will be interesting to see what they go for, currently 380 after 1 day with 8 days to run.

I've been quoted 250 to refurbish mine, fully painted which i will be doing when I get the car back.
 
  
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Dammit
Indianapolis


Joined: 23 Sep 2016
Posts: 2258



PostPosted: Sat May 11, 2019 10:26 am    Post subject: Reply with quote

I’ve been looking at brakes recently- not for the 911 but for the C55.

A pair of front callipers are £1,002 from Mercedes- these are six pot Brembo units. On eBay they’re ~£650 for a haggard set that will need a £250 refurb.

Which means you ultimately “save” £50 per caliper, but have no warranty and much more faffing around.

I’m going to buy them new, from Mercedes.
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uk996
Silverstone


Joined: 09 Jan 2018
Posts: 132
Location: Home Counties


PostPosted: Sat May 11, 2019 11:59 am    Post subject: Reply with quote

Dammit wrote:


A pair of front callipers are £1,002 from Mercedes- these are six pot Brembo units. On eBay they’re ~£650 for a haggard set that will need a £250 refurb.

Which means you ultimately “save” £50 per caliper, but have no warranty and much more faffing around.

I’m going to buy them new, from Mercedes.


I'd concur, for that little a price differential, I'd buy new.

If it wasn't for the price gouging approach by Porsche, the people who'd benefit from the 6 pots would buy new too.
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Hoggy
Newbie


Joined: 11 Jun 2014
Posts: 48
Location: Fife


PostPosted: Wed May 22, 2019 4:10 pm    Post subject: Reply with quote

What’s a refurbed set worth nowadays then? I’ve got a pair that will be getting refurbed this week. Was toying with putting them on the car but if they’re worth decent money I might just sell them.
 
  
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